body{
    margin: 0;
}

/* //隐藏滚动条 */
@supports (-moz-appearance:none){.hide-scroll-bar{scrollbar-width:none!important}}
@supports (-webkit-appearance:none){.hide-scroll-bar::-webkit-scrollbar{display:none!important}}
.hide-scroll-bar{-ms-overflow-style:none!important}